Results of the Extraordinary General Meeting on April 29, 2016

Bernin, France, April 29, 2016 – The Board of Directors of Soitec (Euronext Paris), a world leader in
manufacturing revolutionary semiconductor materials, is announcing that the Extraordinary General
Meeting of the Company’s shareholders held today on second call and chaired by Paul Boudre
approved both resolutions on the agenda by a very large majority. These were the only two
resolutions that the Combined General Meeting of April 11, 2016 was unable to vote on because the
quorum requirement was not met.
The Group reiterates that all the resolutions that could be put to a vote were adopted at the
Combined General Meeting that met on first call on April 11, 2016. Given the votes in favor
expressed at the Extraordinary General Meeting held on second call on April 29, 2016, all the
resolutions required for the Company’s proposed capital increases1 totaling between €130 million
and €180 million announced on February 10, 2016 to go ahead have now been adopted.
The General Meeting of the Shareholders approved the whole proposed recapitalization project of
Soitec and also the delegations of powers to the Board of Directors to carry out each of the three
capital increases reserved respectively for Bpifrance Participations, CEA Investissement and
NSIG Sunrise2 (in a total amount of around €76.5 million) and the subsequent launch of a rights
issue (in an amount of between €53.5 million and €103.5 million)